Playing your instrument with a friend and a really cool CD . . . what could be better? Playing duets teaches us to play in tune and in time with other musicians. Definitely at the top of our "To Do" list as brass players. With Double Dip, we've taking it one step further by including a terrific play-along CD to go with our 20 dynamic duets. Cool tracks plus two trumpets or two trombones is a definite slam dunk!